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A short antenna pole next to a house Multiple Yagi TV aerials. Antennas are commonly placed on rooftops and sometimes in attics. Placing an antenna indoors significantly attenuates the level of the available signal. [19] [20] Directional antennas must be pointed at the transmitter they are receiving; in most cases great accuracy is not needed ...
Digital terrestrial TV antenna used in Indonesia. Digital terrestrial television is received either via a digital set-top box (STB), TV gateway, or more usually now, an integrated tuner in a television set, that operates on the signal received via a television antenna. These devices often now include digital video recorder (DVR) functionality. [3]
In North American digital terrestrial television broadcasting, a distributed transmission system (DTS or DTx) is a form of single-frequency network in which a single broadcast signal is fed via microwave, landline, or communications satellite to multiple synchronised terrestrial radio transmitter sites.
The situation with worldwide digital television is much simpler by comparison. Most digital television systems are based on the MPEG transport stream standard, and use the H.262/MPEG-2 Part 2 video codec. They differ significantly in the details of how the transport stream is converted into a broadcast signal, in the video format prior to ...
A USB digital TV receiver with its antenna. A DTV receiver is a set-top box that permits the reception of digital television.Its components are very similar to a desktop PC. The DTV receiver is a vital link in the chain of television syste
In the US, multiple digital signals are combined and then transmitted from one antenna source to create over the air broadcasts. By the reverse process ( demultiplexing ), an ATSC receiver first receives the combined MPEG transport stream and then decodes it to display one of its component signals on a TV set.
There are several different ways to receive digital television. One of the oldest means of receiving DTV (and TV in general) is from terrestrial transmitters using an antenna (known as an aerial in some countries). This delivery method is known as digital terrestrial television (DTT). With DTT, viewers are limited to channels that have a ...
A standard rack-mount headend. Once a television signal is received, it must be processed. For digital satellite TV signals, a dedicated commercial satellite receiver is needed for each channel that is to be distributed by the cable system; these are usually rack-mountable receivers that are designed to take up less space than consumer receivers.